Quarterly report pursuant to Section 13 or 15(d)

Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital (Earnings Per Share Tables - Diluted Computation Of EPS) (Details)

v3.8.0.1
Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital (Earnings Per Share Tables - Diluted Computation Of EPS) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Stockolders Equity [Line Items]        
Net income (loss) available to common shareholders for basic earnings per share $ 35,326 $ (8,541) $ 5,464 $ 102,043
Add (deduct): Noncontrolling interest in Operating Partnership 4,413 (999) 2,412 11,947
Deduct: Redeemable noncontrolling interest (2,683)   (6,157)  
Deduct: Redemption value adjustment of redeemable noncontrolling interest in Operating Partnership (316)   (1,748)  
Net income (loss) for diluted earnings per share $ 39,423 $ (9,540) $ 6,128 $ 113,990
Weighted average common shares 100,727 100,253 100,701 100,486
Net income (loss) available to common shareholders $ 0.39 $ (0.10) $ 0.06 $ 1.13
Mack-Cali Realty LP [Member]        
Stockolders Equity [Line Items]        
Net income (loss) available to common shareholders for basic earnings per share $ 39,423 $ (9,540) $ 6,128 $ 113,990
Deduct: Redeemable noncontrolling interest (2,683)   (6,157)  
Net income (loss) for diluted earnings per share $ 39,423 $ (9,540) $ 6,128 $ 113,990
Weighted average common unit 100,727 100,253 100,701 100,486
Net income (loss) available to common shareholders $ 0.39 $ (0.10) $ 0.06 $ 1.13